Hello again,
I come here with a suggestion for a type of sensor yet to be seen...
Although typical sonars measures the distance of the body and the target they do not measure the velocity of the vehicle...
Although this may be very difficult, a sonar based on Doppler effect can give us such reading......
With sonar you don't need super fast electronics, that's for sure... And that makes everything possible...
If the body has a typical speed that isn't as fast as the sound (our case) and you can measure the receiving frequency then
by exploiting the Doppler effect you can find the velocity of the body!!!
Any suggestion, guys, on how to measure very small changes in frequency and if it is efficient to turn frequency
to voltage to do that...
Any suggestions are more than welcomed!!!
Lefteris, Greece